(C_8H_8)Sm(C_8H_8)Na(THF)_3的晶体结构

CRYSTAL STRUCTURE OF (C_8H_8)Sm(C_8H_8)Na(THF)_3

(C_8H_8)Sm(C_8H_8)Na(THF)_3的晶体属单斜晶系,P2_1空间群.晶胞参数为α=12.140(3),b=13.794(3),c=8.944(3)(?),β=111.68(3)°,V=1391.8(7)(?)~3,Z=2,μ=21.93cm^(-1),D_c=1.43g/cm^3,F(000)=610,Mr=598.0。结构经Patterson函数和Fourier技术解出并经最小二乘修正,最终的偏离因子R为0.046.配合物具有双层夹心结构.其中Sm^(3+)和Na^+通过η~8-环辛四烯基连接。

The crystal of (C8H8)Sm(C8H8)Na(THF)3 belongs to monoclinic, space group P21 with a= 12.140(3), b= 13.794(3), c=8.944(3)A, β=111.68(3)° , V= 1391.8(7) A3, Z = 2; μ = 21.93cm-1, Dc=1.43g/ cm3, F(000) = 610, Mr = 598.0. The structure was determined by Patterson and Fourier technique and the parameters were refined by least-squares, The final R is 0.046. The complex has the bislayer-sandwich structure and that the Sm3+and Na+ions are bridged by η8-cyciooctatetraenyl group.